A function is even if, for each x in the domain of f, f (- x) = f (x). The even functions have reflective symmetry through the y-axis.
We have then:
f (x) = - cos x
f (-x) = - cos (-x)
On the other hand:
cos (-x) = cos x
So:
- cos (-x) = - cos x
Therefore, it is fulfilled:
f (- x) = f (x)
Example:
cos (pi / 2) = 0
cos (-pi / 2) = 0
Answer:
the second one
Step-by-step explanation:
when we make the fractions have common denominators it would be:
9/12 and 8/12
9/12 is bigger than 8/12, so that inequality is true
Hey there! Here are three examples of percents:
Polls-used for politics, or just for fun.
Math class-Math problems may include decimals, which can be turned into percentages.
Newspapers-You can search these, and there will most likely be some percentages.
Answer:
So, cows heart best is faster than horse.
Step-by-step explanation:
Time and heartbeats are in direct proportion.
p = kx
Where p is the beats per minute and x represents time in minutes
Now, to find the value of k, substitute p = 152 and x = 4
152 = 4k
k = 152/4
k = 38
Cow: y = 65x
So, cows heart best is faster than horse
Between -0.56 and -0.65 : -0.560000000001 and -0.649999999999
Between -5.76 and -5.77 : -5.7601 and -5.7602
Between 3.64 and 3.46 : 3.639 and 3.63900001
